Based solely on the quarter next to the stone, and without having any data on weight, content, make-up, etc.; looks like about a 3 pound'er to me. Meteorites worth about $10,000 per pound, once they have been CONFIRMED. Lots of stones are found. Few are proven to be meteorites.
Have you done a specific gravity on the stone? Have you compared the magnetic signature to a stainless steel knife? Have you filed a "window" into the stone to prove metallic content?